Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd932452dd29319325143b8a37b7f9b986c430062dec63cd4f0b6ed3575bc7d7' 
  AND token = 'hpXhgA/+gkQO+gtQznqai+Hoeve9MIOff0y8JF6CPlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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