Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48084981c54cb6c738a9a9593738e55da3177619071ad07dfddacbb953aafb78' 
  AND token = 'iA4GytE5UdPkfCVavVgfDQmCoOjgGvu5rK+LOxbvKww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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