Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13e58e42e8b69d7ca600ffd20d3667c20fb5fee592779e085a199ce456915deb' 
  AND token = '0PWhBtx7/1tdLMVc7rSZPIzKxy+8RWHnyW5piRiDFNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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