Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1da4415bc9f090462dd2731f7a45522f17500b6bb82e8500ba4d292d9c563883' 
  AND token = 'TitwC7NSTUoz3Ft+iHmVdQcj0gwfS9poSL+MfKLibfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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