The short answer is no. While WD-40 and MO-90 (Muc-Off's similarly formulated product) are great for lubricating seized or stiff moving parts, those types of lubes don't have the consistency or the durability required to protect your chain and drivetrain from wear during riding. A dedicated bike-specific chain lube will do a vastly superior job and save you money in the long run, while unsuitable lubricants such as WD-40 will accelerate drivetrain wear if used as a regular chain lube.