Can you explain the raise?

Your equity here is somewhere around 33% and there's 3 in the pot. I struggle to justify the raise.

You might be after information, but the button will call regardless, and the BB is a complete unknown. The 3-bet most likely says you're beaten, but first hand he could simply be making your acquaintance.

An ace on the board says you probably wont win unimproved, but it also says you could make a bucket if you make trips (but don't forget the poss. wheel and 4 flush). I'd try and see the turn for 1 SB here and fold unimproved.