Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '513197afe5f586b7e22fe640ed3a33360c05c9bdb78bb6e2ccf7f67f9191e980' 
  AND token = 'IEeaOHu7E74G9BrvF7M5ShL+wxoJrqFwcqkmX80kwCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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