Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd24b0a4d0efecf0650eca5f2b2fe417508a05bbf8ae64a5c456fcc0d5dbe9ccd' 
  AND token = 'jacH841bTZsHIhzY60jzvDDjJPVBhmePo5VsTQ6UbSQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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