I had mine out this spring when I fitted 3 new tyres, don't think it had been out from new
I managed to get the lock undone with the aid of a claw hammer and had to go out and buy a new lock.
Spare tyre was the original 2006 so 10 years old, looked just like new, never been out of the carrier and had an impression of the carrier wires worn in to one side of the tyre wall.
So if you aint had it out for a while (or maybe never) its worth doing to crawl under and at least check the condition and the age ...........and that the lock can still be undone and removed............. and even if it still has a lock.