Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da48425984bcef9c5a36d7b58f3ce37c8d3ff33ca67db5d754b6358d014fc08e' 
  AND token = 'pUKv44uyqQl41VbBRw5bsNqiBM11qTroO5SEiP8+AlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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