MOPED ARMY

Hello everyone, I can't seem to figure out what the key on my suburban is for. I'm almost certain it is for a steering lock but I can't find the point where it will let me turn the key. I thought it might be an ignition thing, but the bike starts without it and I didn't see it in the wiring diagram. Is there a trick to engage it? Is it common for these to break? The bike looks almost brand new. I don't have a title, if it is broken, is it possible it's stolen? Thank you.