Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49056ca5bda3faea74f1cca5f2d304f7e6cb692d31cd97135a9d05434a7a6d15' 
  AND token = 'XJVMzWZkTxyc+FsXdPGp/k2iSt3dJ8DdUMk8WPQDBfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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