Is this AK often enough?

PokerStars No-Limit Hold'em, $0.10 BB (9 handed) FTR converter on zerodivide.cx

BB ($2)
UTG ($6.20)
UTG+1 ($3.70)
MP1 ($12.05)
MP2 ($5.35)
Hero ($27.65)
CO ($7.65)
Button ($10.30)
SB ($21.45)

Preflop: Hero is MP3 with A, A.
1 fold, UTG+1 calls $0.10, MP1 calls $0.10, MP2 calls $0.10, Hero raises to $0.5, 1 fold, Button calls $0.50, 2 folds, UTG+1 folds, MP1 calls $0.40, MP2 folds.

Flop: ($1.85) 3, K, 7 (3 players)
MP1 checks, Hero bets $1.8, Button folds, MP1 raises to $3.6, Hero ??