Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '25a7682b3deec50f2636af3104328a39e93a6249377ed438623a847a71696922' 
  AND token = 'jypvyKh0iXmsCWyMAp7uKPGA4tw2KqTT95ibHZL2w+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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