Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43dc72314b00a1d1e8e30d6a77a1533dd19d2d262199a26953f52f8b5e69217c' 
  AND token = 'QsLW/GpsAQWyTJ8en/ki16ApacMACP+6uPvapHqSuY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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