Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7648060fb102cdd91d66db33bd11865a6952b097f7aff74089cded2b5cd7b94' 
  AND token = '1EwKqZepuiUZsgAkWEhAjXmrVYWvio9FU14iKDSZOoE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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