Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eba465fc31039e51e5b913d7357dd0ea8c3075a12c810af15f201b4b0468080c' 
  AND token = 'mp7WRdnh4oTcxdUkq0hb4r8xUiMY0Y5DNblivs40ISA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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