Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32dbc0e7197ed886ea2544d6a3a2e068cb63e9483de5f81e1639f9f973640e7c' 
  AND token = '6wbqZsV1/uTEY8U0XY1gbLl1+or42upOE25znzeUHLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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