Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f1afcc8d233c8f120b98e2a648a5ccb5b46a445aa27be246b90ee5b19ac21e7' 
  AND token = 'koZQepU/hsFbLpGJIjE4B9Baf8caM/7iQFRgw1OiIPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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