Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61fa5ce2fe743e770717314a6e4ab0a767aa4a97622b7ea48d5ec2228e844486' 
  AND token = 'qypyzJeT51iIE0VWtJcbMaKhNBTqYrG8EDPTEjs4GQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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