Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9969a93ca57f7d6dd68da800927126a79b6af4103f7a7c4c6420e0b87b0aec7a' 
  AND token = 'ziqOaKjsXujKdIhLFvgH9ui9jyxw73Myht9g5DlSmKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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