How badly do serpentine belts age in storage?

I ordered a serpentine belt almost two years ago (July 2024) from a Toyota dealer. Never got around to installing it. I heard some squealing from the front the other day when starting up, so I plan to remove the belt, put in the new one, and spin/check the pulley and tensioner while I'm at it. The belt is presumably made of EPDM. It's been stored in a climate-stable garage, so nothing too extreme but I don't want it to snap under sudden tension. On the other hand, I can't imagine that two years of indoor storage is harder on a belt than a decade-plus of actual use for the current belt.

It looks like the new belt was made in April 2024, probably.

Is it safe to install the new belt? Am I seriously overthinking this?