3B AK OOP on paired board should I cbet?

PokerStars - $0.25 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

BTN: 99.56 BB (VPIP: 18.18, PFR: 18.18, 3Bet Preflop: 0.00, Hands: 11)
SB: 109.68 BB (VPIP: 6.25, PFR: 6.25, 3Bet Preflop: 0.00, Hands: 16)
Hero (BB): 105.4 BB
UTG: 102.6 BB (VPIP: 20.00, PFR: 13.33, 3Bet Preflop: 4.76, Hands: 45)
MP: 68.68 BB (VPIP: 31.58, PFR: 10.53, 3Bet Preflop: 0.00, Hands: 20)
CO: 177.28 BB (VPIP: 21.21, PFR: 12.12, 3Bet Preflop: 5.56, Hands: 36)

SB posts SB 0.4 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.4 BB) Hero has A♣ K♠

fold, fold, fold, BTN raises to 3 BB, fold, Hero raises to 9.2 BB, BTN calls 6.2 BB

Flop: (18.8 BB, 2 players) 7♥ T♥ 7♦
Hero bets 8.96 BB, fold

Hero wins 17.96 BB

yeah we won but what is purpose of my cbet? should i x/c or bet? what about bet AQo and x/c AK?... betting range is getting pretty wide if I bet all my overcard broadways here i guess