Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf1c16fe63b45ce752ca055ed7230a10846a45cbd6d792993785d8f5d7250772' 
  AND token = 'gZI7EM/f6WH9Y5ecjohVySZw4/X4Zs47QsG9aTIJCV0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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