3rd barrel in river?

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.05/$0.1 No-Limit Hold'em (5 handed)

Known players:
[tg]BB$17.19:///////;MP3$6.92:///////;CO (Hero)$15.03:///////;BU$11.82:///////;SB$10.22:///////;[/tg]

Preflop: Hero is CO with A:c, Q:s.
MP3 raises to $0.30, Hero raises to $0.90, 3 folds, MP3 calls $0.60.

Flop: ($1.95) T:c, Q:d, 5:s (2 players)
MP3 checks, Hero bets $0.80, MP3 calls $0.80.

Turn: ($3.55) 7:c (2 players)
MP3 checks, Hero bets $1.80, MP3 calls $1.80.

River: ($7.15) K:h (2 players)
MP3 checks, Hero ???

Should I make a third barrel in the river or it is not worth it since came the K in the river??

Any other way how to play this hand against un call station VPIP 40%?

Thank you very much!