Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '321655441f86ab9151dc40f67b848afea2ba8495cdae7bb88379ccd4af69ee28' 
  AND token = 'BSaJKUQilJlczn3mJ0isZIy5i98qr9Ob7Ykmdk1UeIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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