Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc09d719dcf082f10aeb1fb5486f3290098e461fde754886967d840057ef452f' 
  AND token = '/ze2yGu+qx1KiKrIJGKOEnFdCgZOduLG6BI9R8H/eRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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