SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1376d7a56da095f4804c27817beba78b000b40b422b92e815a8b5145fb2f0b6' 
  AND token = 'oddkX0x3y8EpzmPvkuWiVdf+BjfolIi0xXJ+FqwTgX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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