Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0585628ead45cf1c57cbcae67c9514cf8f431908da13fdc7d5a78d6fae55b53e' 
  AND token = 'WZiGJDuuq6inWiABOBhxM2njmn6m5at2etbrEXvpoLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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