Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5077443df0ada12f6861be9ef7b6750355ec867cba266eb0f88ff1d9516bb905' 
  AND token = 'ThmaMN0S3p49VaNErBbAHNsRnayoPZZHtbo5gYl5l64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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