Yes, I believe all the keys are in chests. Every key I have found was in a chest. Also, some of the chests appear only at certain times.

uh huh ok then so there is a krypt but is it on the main option screen or just in konquest mode lol soz for the dumb questions people i just dunno how this game will work lol cause as u all prob know aus dont get it till november 15 or november 19

The Krypt is separate from Konquest mode. It's on the main menu screen. You can buy things is the Krypt with Koins but some coffins have locks on them and the way you get the keys are in Konquest mode. You get them in tresure chests, like it was said in the post above mine. Some chests only apear on cirtain days or times too. But don't worry most of the answers to when and where can be found on this site. When you get a key, you can save and quit, go into the Krypt and use the key on the coffin it says it's for. Hope that helps!