Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2911b1603fe7eb640d4c2742de5789c231729fd7be599a03f315c8543197245e' 
  AND token = 'xfGoxc/XWHQbJ8O2gS10ad8bTXVXt0D3AsZPNsQeTyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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