I would just check the flop because I dont like continuation betting 3 handed unless im really sure they havent hit. If your going to bet you should at least bet harder and as played I would push on the flop.
You have AK and there are 2 callers, the chance for them having something is very big and they will often call and if you don't hit the turn your fucked. On a higher level I would have bet but vs passive players on NL25$ (most are) I wouldn't semi bluff the flop here vs 2 players.