SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1f296a59b5f8861c7782ad06b936639ef415cf26dc521d558a7d2c35f71b16e' 
  AND token = '+08xaOw4w7wwoBDVGZHkhWtJYA9gX9Ba6D9KxVSChOs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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