Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bf7c9be29fdbcc72e3717b07a6c4d7018111b5b770183d682abc9479ab2b500' 
  AND token = 'qpGtM7MPqohn2dhz8wu6QEfgh4kcqZp/EhMzddirAPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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