Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '75e9c1922524cb61c09a90e209440eae7bda61d4c07a4f2f9664b9e5d5217833' 
  AND token = 'GiV+1hVDwwmc76b1X3rXw0OljWXjjUQjnffi+kFm0P0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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