Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da0fe7c13c6ef33abaea6ec760215f2d8d4681267eeafe6dab090529a88e7ff5' 
  AND token = 'b4bdgfJyIYuHC030+l2scWFKudmhCD9tEkd97SJKvLU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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