Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd85dc5140d49fa747df43ca814f08adb20b7dcb3621e3ebb698e2c1bd7ea030a' 
  AND token = 'Wmgyd0g6KbmmQu9Sre7ZYRgIeadjWDL17ZoBcyom+yI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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