Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bab571a169fd63694fcb4d21d6181eb9656e5ccc83ecea18295808d79730b66a' 
  AND token = 'UTvkSe7PveBbTzKAXfKrEso6lYWTHu27UITd4ydvdi0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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