Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae60aa50b64a3405d35a2783576ccb6c73828d05fab450341e2e333e0cefa141' 
  AND token = 'MbxXiS/bkeTaHwf3MmvsoE4N/XC9HPxKNQNIam4W0kM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}