Full Tilt - $0.02 NL - Holdem - 8 players
Hand converted by PokerTracker 4

Hero (SB): 100 BB
BB: 115.5 BB (VPIP: 18.18, PFR: 18.18, 3Bet Preflop: 0.00, Hands: 11)
UTG: 133.5 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 5)
UTG+1: 74 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: -, Hands: 1)
MP: 39.5 BB (VPIP: 100.00, PFR: 100.00, 3Bet Preflop: -, Hands: 1)
MP+1: 104 BB (VPIP: 17.55, PFR: 12.08, 3Bet Preflop: 5.21, Hands: 1,617)
CO: 218 BB (VPIP: 15.07, PFR: 8.27, 3Bet Preflop: 1.79, Hands: 684)
BTN: 96.5 BB (VPIP: 27.78, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 18)

Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has K A

fold, fold, MP raises to 3 BB, MP+1 calls 3 BB, fold, fold, Hero raises to 10 BB, fold, fold, fold

Hero wins 0 BB
Hero wins 10 BB

I'm always concerned what to do at this spot, should I just flat here pre?

It's fine. You could maybe raise slightly larger being oop

I feel like I'm isolating myself against only better hands oop, especially that mp+1 is a really good player