I like movies like this
It's low budget with some kind of mystical element to it. I love it when I can say to myself, what if I were in that position?
Well. I certainly would not try a key after the first 3 attempts made. After all, there are 25 spots on 5 sides and it looks like 14 keys making the odds 1/1750 that you get the right one.
Anyways, I enjoyed it for what it was.