QQ on a K high flop?

[HoneyBadger]

How would you play this hand?

Party Poker 2.00/4.00 Hold'em <font color="#0000FF">(9 handed)</font> link

Preflop: Hero is SB with Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, CO calls, Button calls, <font color="#CC3333">Hero raises</font>, BB calls, CO calls, Button calls.

Flop: (8.00 SB) 6[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, CO folds, Button calls.

Turn: (5.50 BB) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, Button calls.

River: (8.50 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, BB checks, <font color="#CC3333">Button bets</font>, Hero calls, BB folds.

Final Pot: 10.50 BB.