Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd813090c46ee77b6450774b6156997966553ce35f0cd540f2ff0a7514b562c13' 
  AND token = '1/ZaPCOq9hz4OdZ9v4k460poYX0VmY0m0H6pZpOW8Kg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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