Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6369728e2d27e8221e08c7bdeaa823acfb152f0599086664102b909c5c67b859' 
  AND token = 'ZsyxZTDWG3Ke3gcVt3cHhaX8a9WK6mI6UtWL6TOYOm0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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