Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8185f2f93d749900d009a3cfb11d3c08eb8b193159267df7d0f02c161f003cc9' 
  AND token = 'gUigZkNQSlMqTwFGGtJkKKoX06SpX3WEIULIbfBJlME=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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