Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd373f11cdcacf748de5b8c9e296ec4354f2c35714ab456d1e9156ed726c34926' 
  AND token = 'qSBK8TM+tEiBE6GOlLoP+nOwQGSn/D9OSV+Ka4nSzI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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