Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7628980c9e7b73a8b759fefd1b7daad7e27178fbd09f4d88f9fbd5c0296499d' 
  AND token = 'DuNQxtZ6foC3MMYrkI3vWdXUr2BbrhOLm9pmXK47xJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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