Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c24dd16db60bcdb62bc9f725eb835e65e6d4127103559c99ecffda8afea0522a' 
  AND token = 'jjRIU1sHzrxErPF6tIZUAbI9FbOppEFvwW4DC0xk+gM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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