Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '93638a32a75769c370730be9f8ef8c336e2530378b70d31dbb87a4770597f289' 
  AND token = 'nGJ4uAgRJ3WFmOSsr5FbNLP1QWf48KXd6Ugutpm7Ouc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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