how to handle mindonk in multiway pot with overcards

[kroeliewoelie]

Ok, I couldn't quickly locate a suitable handhistory, so I just explain the setting of my question.

Say you raise AK UTG, get called by the button and the small blind. The pot is now 13bb. Flop comes with 3 random cards, but no aces and kings.

My question is what do you do if the small blinds donks this flop for 1bb (or something like 3bb)? You have just overcards and the button still has to act behind you.