Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05d00af0f57c38ef85d06f96cd73004cddf854170442db908f322c6e8fd2fc94' 
  AND token = 'YxF/FO/P03Cx5Ha6f4gwyTl1stcDhCZFTZX2zxqBwjA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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