Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c4d71edaf2e561374b3d5b8d7b759aec6824760d0b5858fca6cd7c34d92e653' 
  AND token = 'thF3pMrWaZrMCvtSnWlrpecEY6nm3F6eESJeyDlGvcM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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