Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13a525c183db8cf27190a186aa3a813497c12832ca36af9a22987de42bc1a0fa' 
  AND token = 'y9EJ4YFii77cVBxmX1d9w5YwPLKPrMA7rVqDr7gnOMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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