SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82ac0bebbf50270c94ed8785b104c981c435c84c48f6210c3f893bb5fd76495c' 
  AND token = 'WPabZT2qgF0PFcXtv7hNrHGIvKZBAWav+Pwif8BuxjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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