Villian is loose-passive. called 3-bet on the button with K6o. Comments?

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

CO ($4.49)
Button ($1.44)
Hero (SB) ($2.80)
BB ($11.32)
UTG ($5.68)
MP ($1.31)

Preflop: Hero is SB with A, J
2 folds, CO calls $0.02, 1 fold, Hero bets $0.10, 1 fold, CO calls $0.08

Flop: ($0.22) 9, 3, 2 (2 players)
Hero checks, CO bets $0.10, Hero calls $0.10

Turn: ($0.42) K (2 players)
Hero bets $0.20, CO calls $0.20

River: ($0.82) 4 (2 players)
Hero checks, CO bets $0.50, Hero raises to $2.40 (All-In), 1 fold

Total pot: $1.82 | Rake: $0.05

Results:
Hero didn't show A, J (nothing).
Outcome: Hero won $1.77