LALAL.AI packages do not have an expiration date per se. Once you’ve acquired a package, it’s always there until you’ve used all minutes available for splitting.
Say, you’ve bought the 90-minute Lite package and processed 90 minutes worth of audio/video through the service, then you will have to get a new package to split more files. If you’ve bought it and haven’t been using it for several weeks or even months, the package with all its minutes is still available like you purchased it today.