The min-re-raise pre-flop at 25NL is usually AK, in my experience, though with players who have a PFR of say 10%+ it could be TT+ or AJ+ (there are very few players who are strong enough to re-raise with worse hands - the only ones that do will be maniacs with 65/35 type stats and you'll easily be able to sniff them out).

The minraise on the flop means he has at least top pair, which figures. KK doesn't min-raise here, ever. So, does he have AA, AK, AQ or worse? I really struggle to see how he has AQ or worse more than maybe 20% of the time, especially with PFR stats of 7%. I have to say this is about the most obvious an AK hand has been, ever.