Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f193bfc71a7aa2a09a4aaf1f95062abcc3fac44dce5144138b164a1b8337a8b' 
  AND token = 'HbQIy/FKG4X0iFlAGt//2viad48y5iQbR9YZMrEfIW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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