Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4edcb5b91818620020fca40cf1cddcaebf72e71c7d6b4a1f2004ad1646a4f0b5' 
  AND token = 'PjDroBRc7Euf6OZewvVr9x5Uo2mYqwSQFFupNXkr1cQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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