Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb59133aeb6124b265545c10b5c0dcaa5665dd81570ef3a00598ba6237737e39' 
  AND token = 'MlxxELBci+jXJjp4WNZKrwH79jjL7Homx9geg0mCjCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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