Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '194f101a5bf96ffab9195f6975dcbdbd05c78522ef9994e6a55634afe0be8f9c' 
  AND token = 'qcSYZDC7FaVOuV3oYOLX2dSKKhMDZkBjcr9U7z0lBbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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