Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '33aaccef9f145ee7766e5f392065c18e5b4e6130688bb308dd7d09fbd5b184cb' 
  AND token = 'l0kKpQaVdaavMQx1Q+CWba17LBb9dj2jUZrL1guWkmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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