Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbcc376cd3e1070d9d218856355fdc2072e99a341e1680b9b4f132844bddd435' 
  AND token = 'iL98WHLihVDBOAcEkU2oVIQbQx0Bvna+m5NeGZxYnCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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