Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e39f61012aec4ec9b26e164848426608905646d838513d89414bcf59e0d44be' 
  AND token = 'nrSMQdMUA5jKJqiUX6A45WFDnbS+WnZ028/P161XDWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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