Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ec96969698e42082152444d949cb256d8ad60b79b68f6a39492adf4bc2c4142' 
  AND token = '9uMgKyaPr2lBWVA13sHti5sL6NJ50nXuJ1h8fI5Oebs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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