SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65642ac11c92de9a2c0c8bbd99aaabf10438334578bc47509e5ccc04d10bb4ef' 
  AND token = '3yQVCU+pyTIvHON81zjH+oOi1I9hTIARVQomhohGaAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

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