Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddab9d639dc81fa7025804da6e514cf336642c26d58246a8064f58f6f9353bcf' 
  AND token = 'RTICZXZr30v6vZxrSLswxvMuvGhwxeQrQa1Aj3RZQQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00091

JSON explain

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