Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02e255366ae3b23c507c31c1078588b3d6c7ada55289b700037b45a876e3b619' 
  AND token = 'PjbX4+k/xHC1GkvbC9mHxY7HDy3038BAim0vFsSTVuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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