Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b156f84643daadd6fa3c0dc1b13dc53d5b1811a5e5586f8cb057c28a3c41fd7' 
  AND token = '7qLMnBIizAHsqW/Uvd7ens9C2ftdyd7FTw5dAUPizmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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