Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'e05d9b6a6b1f095dcb40c8bd718fcb2b0a87a7ca26fc7df381df12ed6da01154' 
  AND token = 'wHgI1YMWRry5GtOy/zHA2DN9yShgRYauk9aB/VRv15M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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