Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '776379e7f1bbcbe4ebc32636b0d5ace6ac3474dbf8e5833379b4c0e1fc72d19f' 
  AND token = '41qHj67qtHeFs/Cqi4GWO94TFkYvpdKMJ2TpvDva8ew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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