Pre: Vs a 4x open from the CO we must fold this trashy a hand.

Flop: As played, firing once here seems OK to me since we will fold out a large chunk of villains strong broadway range that has us crushed. This is very much a one and done bet.

Turn: Perfect as long as you were planning on check folding.

River: Nice bet, I like your sizing here.

BB vs CO K3s-K5s are usually 3 bets for me, but against a min raise I'm happy to just call here with great odds.

As played the flop is a check fold. There's just too many hands villain can have which connects with this board.

Once you c bet the rest of the hand is standard.

Your preflop decision is kinda reminiscent of that Q4s hand you posted. It's kinda thin to 3bet this vs. CO and if you find yourself in tough spots post flop with those kinds of marginal bottom of the range 3bets keep in mind that it's not a disaster to fold them.

That being said I think you played the post flop pretty much perfectly.