Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '322caa9deb395d5e5cc28e85589f025d0a55f0c4032752d8e897126098c36482' 
  AND token = 'kufE8NjWIRdBL4kkxn9PRq3nglofe6UykSeItmHBn6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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