Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe70619df3b4055271b4b42f375570b84af900efcfea717521878098d41a018f' 
  AND token = 'XwpeE+1c0KAbnbBa7MSkQuW0QWCYI+5aDCO8jPdEIw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}