nl25 sh A8s vs unknown bu

villain is a complete unknown, got no info on the guy.

Poker Stars, $0.10/$0.25 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

BTN: $25 (100 bb)
SB: $19.43 (77.7 bb)
Hero (BB): $34.77 (139.1 bb)
UTG: $18.44 (73.8 bb)
MP: $26.02 (104.1 bb)
CO: $33.05 (132.2 bb)

Preflop: Hero is BB with A 8
3 folds, BTN raises to $0.62, SB folds, Hero calls $0.37

Flop: ($1.34) Q A 6 (2 players)
Hero checks, BTN bets $0.90, Hero calls $0.90

Turn: ($3.14) 7 (2 players)
Hero checks, BTN bets $2.25, Hero???

what should i do on the turn? would it be bad to check/call the turn and check/fold the river? or should i make my decision to call down on the turn and if i don't like calling down then fold the turn directly?