Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c41c838014dcd154f84b2ac9ac3e26789b4b38b06e94b50bec6578de531ab8e' 
  AND token = 'GizxIGyjqmpQFD4xXz8t7zsh9CYNjszQ3oQA2EVRmVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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