Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34fa68e5b46c5672a0103cccfe006f204000b867c9466189b829d33eb2e60705' 
  AND token = 'j+kYWRXl3/j8hGz1QlIDGzaQ2S/ozLXxqjxRw8Gl8+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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