Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '227d0fb7ae14eb8f9e1927772f75833ebf70858920526f2c6e199f59e41f131a' 
  AND token = 'HxbknvCpoYmWQ349KgcQ6QN8G+BJLvyNQzTqBHfdbnc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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