Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '47a66c41d95e1df1b9b97716c1bba01371d011d31a9df66654f6a3be1c919224' 
  AND token = 'O/YX1ruEx5jZOFZ52dg8eSsNKLL9UL6pPLT7Yxxn5wg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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