Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baf58f6df49c399ec7120118fd11bbf541edafe06aae453cb40c070e1c37b196' 
  AND token = 'zm1lP0CodkzK2UecivDCEAXIJZdbt05zPP3jIm8gEk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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