Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '03b8c057315762a673f94f0bff662ff5c61d7241a19cc10438c044b5b28273fa' 
  AND token = 'skni5hnKZdKBZuc1Xunf3p6+ZO0Z8xk2+bCVyr0vUtM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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