Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'be1d8d5835aba8806a019339d8e8cf2ee2cba717c79b0973baf213b53daa266f' 
  AND token = 'rN6FEaRilYkc6F9w1jMJObEptvKDpscReDUPzBkHQDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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