"SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21224594 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8306959 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21213649 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21227186 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21226162 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21223278 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21225386 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21201768 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21224404 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21227451 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8402080 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8416800 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231150 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230885 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21231164 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21230669 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21224633 UNION SELECT "int" AS "brett","nachricht","id","antworten","zeit" FROM "int" WHERE "id" ==21229415 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425 UNION SELECT "b" AS "brett","nachricht","id","antworten","zeit" FROM "b" WHERE "id" ==8403425"

This SQL query takes 0.5 seconds, which is too long. How can I create an Index for this query?