Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12e2660efe304c5cbb24b5eab8f130a24ffc8a8bcea11beda3912e569daaa65d' 
  AND token = 'vUBTcrB2V5LY79paqKbls8j8iwFWkLbgd8/wFWryTaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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