No reads on villain. Just joined table

PokerStars No-Limit Hold'em, $0.02 BB (8 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($2)
UTG ($2.11)
UTG+1 ($4.53)
MP1 ($0.84)
MP2 ($1.99)
CO ($5.47)
Button ($9.40)
SB ($3.71)

Preflop: Hero is BB with K, A.
2 folds, MP1 calls $0.02, MP2 calls $0.02, CO calls $0.02, 1 fold, SB completes, Hero checks.

Flop: ($0.10) 2, Q, A (5 players)
SB checks, Hero checks, MP1 checks, MP2 checks, CO bets $0.1, SB folds, Hero raises to $0.3, MP1 folds, MP2 folds, CO raises to $0.6, Hero raises to $1.98, CO calls $1.38.

Turn: ($4.06) 5 (2 players)

River: ($4.06) 8 (2 players)

Final Pot: $4.06

Results in white below:
Hero has Kc Ah (one pair, aces).
CO has Ad 2d (two pair, aces and twos).
Outcome: CO wins $4.06.