Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03ccc779a07879c5093b22b0f8eaa59b1b79ff89e377c727a141c89b4d8b770e' 
  AND token = 'yN0GBrNpF/WPv4jzKl5nTV4avvyu/fMd8iqGRDGARFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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