Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0074e772e0b23b2e23f4b282de84ef741247cbdc902e7f620aca226b991e88cd' 
  AND token = 'EMKUxcoFFLwemEClbDIqXXXdc0zrRxgu18FsJDFKD60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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