Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '573bb0ebae55fcd59c9ec8810fd789c5dc025394013365f14f6a1f771e54c4e5' 
  AND token = '7YPn+E1e6CWmg5kBr7k516CTpIozrvkg1JYgxzroQ0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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