Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fc833c956c91cd298c7861903e83b36cc159ba76481e7bf79b152b446d5a11d9' 
  AND token = 'GyM+yJ9k6G5V0SPlEStOaV+iQ+5zbbo9icDQhOTxuLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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