Or is this extrememly standard?

Villain is 37/12/1 postflop AF...should I have smooth called and waited until turn to push with no draws on board? I figured him for AK or KQ, not KK....

PokerRoom No-Limit Hold'em, $0.50 BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($32.95)
UTG ($70.95)
UTG+1 ($26.20)
UTG+2 ($29.35)
MP1 ($24.85)
MP2 ($22.90)
Hero ($51.10)
CO ($24.50)
Button ($6.55)
SB ($24.10)

Preflop: Hero is MP3 with A, A.
UTG calls $0.25, 3 folds, MP2 calls $0.25, Hero raises to $1, 4 folds, UTG calls $0.75, MP2 calls $0.75.

Flop: ($3.40) 5, 8, K (3 players)
UTG checks, MP2 checks, Hero bets $3, UTG folds, MP2 bets $10, Hero bets $28, MP2 folds.

Final Pot: $41.40