A5 top pair

Hi limit friends

The vilain is:
57.14/21.43/AF: 0.83

$1/$2 (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4

CO: 26.93 BB (VPIP: 46.67, PFR: 13.33, 3Bet Preflop: 0.00, Hands: 15)
Hero (BTN): 25.44 BB
SB: 16.87 BB (VPIP: 33.33, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 3)
BB: 34.84 BB (VPIP: 57.14, PFR: 21.43, AF: 0.83, 3Bet Preflop: 0.00, Hands: 15)
UTG: 29.9 BB (VPIP: 41.67, PFR: 33.33, 3Bet Preflop: 0.00, Hands: 12)

SB posts SB 0.25 BB, BB posts BB 0.5 BB

Pre Flop: (pot: 0.75 BB) Hero has A♠ 5♦

fold, fold, Hero raises to 1 BB, fold, BB calls 0.5 BB

Flop: (2.25 BB, 2 players) Q♥ A♣ 4♥
BB checks, Hero bets 0.5 BB, BB calls 0.5 BB

Turn: (3.25 BB, 2 players) K♠
BB checks, Hero bets 1 BB, BB raises to 2 BB, Hero calls 1 BB

River: (7.25 BB, 2 players) 8♥
BB bets 1 BB, Hero calls 1 BB

now reviewing the hand I think he is raising the turn only with top pair medium kicker or more due to his AF 0.83. My kicker is very bad and i lose with A4, and the A♥: x off or suited is in his range. I count three Q, three 4, and two K for tie, and i dont want see a heart in river.... mmm Possible the correct move is bet/fold turn?

Mesa: A♣Q♥4♥ K♠
       Equity   Ganar  Empate
MP2    79.46%  64.41%  15.05% { 44, AQs-A7s, A4s, AQo-A7o, A4o }
MP3    20.54%   5.49%  15.05% { As5d }