Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e3a4a600ef8fdbd7290582eabc4e714f9b0933de493274c97d50551a5081c85' 
  AND token = 'XI/yMoyMtu0EY5s/qjnOLatP8NSfHInCVbkBKOqwHfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}