SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '28ae0b4f14b0ad1ad8df3a18ed7a47ff245d8582248f7cdd62c653607687cca0' 
  AND token = 'gkFsfmNMH8wjn8Q+oiuOUwlGKRtEBw3hIrxYAILMsqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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