AK laydown preflop...long run +ev?

[EazyCard]

First time positng hand history so hang in there with me.

FULL RING $1/2 nl $100 max buy

UTG-$240
MP-$120
HERO-$160

Ive played about 40 hands with UTG and he's playing a VERY bad LAG style and getting lucky. Ive played about 10 hands with MP and he's decent TAG.

UTG opens for $10. MP thinks for a minute and reraises to $30. I get a good read that MP is strong and can already see that UTG is def going to call. Im to the immediate left of MP and look down at AKo. Look at the dealer...sigh...and muck. Action folds around to UTG who instacalls.

Flop comes 529 rainbow. UTG hollywoods for a minute and checks. MP thinks for a sec and pushes. UTG instacalls. MP shows QQ and MP shows 55 for the set. Turn comes 10 and river is a K.

Is this the right laydown in the longrun. Do you guys think I should have pushed preflop to isolate MP. What is the long term +ev on this situation. Thanks for the input.