Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ee84436dd1bd545cf1663c862700287706fb1f2c3c6e3c016467d5faf841861' 
  AND token = 'hdm5PNPXUeEcuecABrhm8sEc1W2Taj3pyPuGMzccz54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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