This lock has a key that has grooves on either side. It's inserted horizontally instead of the usual vertical way. You have to turn it twice before it can open and it requires a lot of tension. What lock is it? How can you pick it?
Also I know of a lock which has a key that has three parts/sections of differently angled 'slopes'. Looks real simple but I've never seen such a key before. What lock is it? Can it be picked?