Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '195bbc5be40ec320567c52541694b8bbd3dc68bc91f741ae4eca68a49ce7ba36' 
  AND token = 'JSFZAOHTqD5Wsi3H2CzDVgkDkr5/dkDsBOswpZWzfw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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