Villain is a total unknown.

My instinct is to call the flop donk, then fold to a turn lead. Agree?

Poker Stars, $0.05/$0.10 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

BTN: $17.22 (172.2 bb)
SB: $21.26 (212.6 bb)
BB: $27.09 (270.9 bb)
UTG: $25.28 (252.8 bb)
Hero (MP): $10.25 (102.5 bb)
CO: $89.33 (893.3 bb)

Preflop: Hero is MP with K K
UTG folds, Hero raises to $0.30, 2 folds, SB raises to $1, BB folds, Hero raises to $2.20, SB calls $1.20

Flop: ($4.50) 2 J A (2 players)
SB bets $2.10