Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '019b04b6f6a43c12b53570b18be1c58f189543cb675cd3403775762ba7b762b9' 
  AND token = 'xOtYDw5kGiJ6U1JqvSg1DibDGr5UQdueqQHqxgPOC+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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