Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db9b8201279546ab5f6994ba9a57b8547ef7e744fb649950817a826dc6260e19' 
  AND token = 'UfXj+0DyKSP/0jAivl/yibxdrxJwSGCiIAr6rTbkAkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}