it would be better if you could remember how much the blinds were, what your chipstack was in relation to the blinds, how much his preflop raise was, especially if you checked or raised the flop, who was in position, etc.

You have AK, it is less likely that he has AA or KK, but that doesn't mean he doesn't have one of those hands.

I don't play many MTTs, but if you both are deep stacked (blinds are small in relation to your stacks) I would reraise him preflop, assuming you have position. Then you know if he pushes that he may just have AA or KK.

There is more to a hand than just your cards and the flop: You have to remember and consider a lot of different factors - all of which are relevent.