Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02e979b51553661dd7c1c9abe8c1f5d80eac314af72353869694aef8002c5ad3' 
  AND token = 'Gq8OnQLNLc11l2WxhctSXQ0aA2JyZrvSmT8Q1As+UiA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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