Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d66990f4b5a5119a36bd043071f58274d3371646e5e58f99a7086d75be6948f' 
  AND token = 'phi1G0JpsmgBbLZDSq2RsP8Uu1GcYOkNU3ybiiOsrLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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