Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd951cc28b6145215f8db210449f9c49b6b2f91615302c4e612c2e982b64fcc3c' 
  AND token = 'bHSk55XV5ZTz1YXtQOBPYaUF9OaV85Lbtpd9jFKgAok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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