Villian is unknown.

Is a flop cbet better?
If I call turn, what's the river plan? c/c? b/f?

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

BB ($89.45)
UTG ($34.35)
UTG+1 ($23.55)
MP1 ($31.70)
MP2 ($25.25)
MP3 ($25.70)
CO ($4.65)
Button ($48.60)
Hero (SB) ($24.75)

Preflop: Hero is SB with A, A
6 folds, Button bets $0.70, Hero raises to $2.20, 1 fold, Button calls $1.50

Flop: ($4.65) K, K, 10 (2 players)
Hero checks, Button checks

Turn: ($4.65) 9 (2 players)
Hero bets $3.10, Button raises to $7, Hero calls $3.90

River: ($18.65) 8 (2 players)
Hero checks, Button bets $12, Hero folds