Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06de9daff396ab935c267f06c78ae351280a4ad7f9f70f534a808d61032ca6b6' 
  AND token = 'vKGBmxcKxsSmvbxUuSYlmSZLs7NYfpvVNe4vsAjYuyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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