Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67accd3be35a999c50aeb2029ed1f33d9fbc5a33fcc0f22c9a700fbb940a1eb4' 
  AND token = 'QBGem+2KbgeIrCkmf9ji1JUQP4F1ZIzmvDRjZY7uyqw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00104

JSON explain

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