Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae01e822d7354061f64e17fa37ce28b2deda86aff6c5d07869d3fd720f8d76df' 
  AND token = '0ZnG8tJS+jwa7KNpK6hocz5ckz9Po8A497VQ2UKhifg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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