Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c0ef2efc1ed3dc885981e7c61d4c0c9f8b3aa9a7ab7173f3c2171e1ae7d1c93' 
  AND token = 'Ss/UBHrDFjWqi1o6n2wy2DMAZKz5T7y5l5xYxNNvsbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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