SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aaacc814fcc8ff027f19e4ea406418b35213ac0f641e24cf68ad182254e2ead' 
  AND token = 'jgMcKoTdA1ZM2q079I0pyUJjkI+9P331X420h1z/PaU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables