Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4932eccbb9417549aa52782f8c6269cfcfa32f31bcdc5c6992dae2a45a51cf7f' 
  AND token = 'W7nw1e6rvopvUgFy8MimA2hLhHJdCYUHYlhMXwOtiIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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