Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e304b093f97cfe6e92ac9f76114fbc795c831bbe9d917f197f4a0dabd2ad3834' 
  AND token = '7ZN9NH9DnOT/XC9Rok18AWPEqmfDhIruB3amjRCu0/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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