Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '910f48702bcbe5799b33fcb23b522ce7a9529101949b7ce3c911eb34e5239e15' 
  AND token = 'eQpuw+WcB9UJ1jcblfchxGtk7aUdSTCQ+ORFUeU/mpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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