Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '822def50083fdd402b55f9bfce3ea634d607b52a360f1594018afe4768ec7b1f' 
  AND token = 'R2fALRfxRu7IxErz95wQfMSC70pEbHyxe0cFDcy6YH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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