Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c09f76caf4cc8ddc3e1884e12ec61869a801e9c8b047c5c3f8cef7b790df7c5' 
  AND token = 'YESfy+8zqukbU/GzrbBRWmWSSN8NkK0eWvRl15OkEz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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