NL10 AK vs minraise turn

BTN: $8.61 - VPIP: 21, PFR: 18, 3B: 13, AF: 2.0, Hands: 105
SB: $4.05
BB: $10.32
UTG: $10.00
Hero (MP): $12.04
CO: $10.20

Pre Flop: ($0.15) Hero is MP with A K
1 fold, Hero raises to $0.35, 1 fold, BTN calls $0.35, 2 folds

Flop: ($0.85) Q A 9 (2 players)
Hero bets $0.60, BTN calls $0.60

Turn: ($2.05) 7 (2 players)
Hero bets $1.25, BTN raises to $2.50, Hero folds

Hello,

I'm not sure about the fold vs. a minraise. Usually this means a lot of strenght from a reg but he's not repping much. Any set/2pair would have probably raised me on the flop. He's probably on a draw or also AK which still wants value from lower aces. What do you think? Thanks