Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '226357a6f15c34f96f3335d141addcd05fbcf4a5f6fc38ebdb90568b8d2764c4' 
  AND token = 'Wi2uCYFbtMNkAXbc7tTPocRC/BGeeAZnERYi7TDla64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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