I can fold overpairs. But should I?

[Rainclouds]

Yesterday I posted a hand where I folded AA on a wet flop vs 2 TAGs. It turned out that I was correct in my decision.

Today I folded kings on the flop vs 2 donks. Given that they are donks, I'm starting to think I misplayed it.
2p2, do you call or fold in this spot?

Party Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $196.35
BB: $200.00
UTG: $265.04
MP: $195.80
CO: $209.80
<font color="black">Hero (BTN): $277.05</font>

<font color="black">Reads: </font><font color="blue">UTG = 48/9/0.5, MP = 40/27/1.5, both are pretty bad</font>

<font color="black">Preflop:</font> Hero is dealt K[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG calls $2.00, MP calls $2.00, CO folds, <font color="red">Hero raises to $12.00</font>, 2 folds, UTG calls $10.00, MP calls $10.00

<font color="black">Flop:</font> ($39) J[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] (3 Players)
UTG checks, MP checks, <font color="red">Hero bets $35.00</font>, UTG calls $35.00, <font color="red">MP raises all-in to $183.80</font>, 2 folds

Pot Size: $292.80