Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0364e93045e6448d5882eb7a35adc02de00bb043bb0fcbdd4b643b65eb207038' 
  AND token = 'nRQzcJrXxooPusyv0lDpd4PFmGceisuVofmUUBZYZvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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