One of the doors should be openable, if not, did you check the tire earlier in the first area?
I did check the tire and found the key, first item I got. Am I missing something or is it possible that I bugged the game somehow?
The key + clue from the barrels will make one of the doors among the lockers clickable/openable. Make sure you have the key equipped.
i finally did it, thank you very much!