Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b636ba551b6f16d8628bcfbaad4c03b474770514f7b5caac30861b7f6faba276' 
  AND token = 'WTxbf60W/TOTbBIqK5TA9Ej92OgU0sR9fDuYXlM124E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}