Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd903eecc726045e0cce7d2c7c8d8c9ef55ffd07cd945d073640e6e577bf91d73' 
  AND token = '7VWkEnVqMp6wxfScLZg2wQFIgvPc0GovaMGzNgp0ReI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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