I have a safe with two locks which I believe are called 'tubular locks'. The key is small and has a circle with a notch on the outside and inside, kind of like a power button. When I closed it today (without locking it) I found that it wouldn't open, then I looked at the lock and noticed that the notch on the lock was not aligned with the outer part of the lock and the key will not fit in. The middle part of the lock also seems to be more inset than the bottom functioning lock.
Does anyone have any ideas that might help me fix this?
here is a few pictures of the lock


