Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '25301568e8200558715941dde9c64a7dd849b5e118676da7f4cdcfb9a718d4bc' 
  AND token = 'XWpoKi55646kRUwt8nak/lHLHQoXcP2fvQT0hD3bSXA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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