Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '787c2ae9c0f63a2b0e882d34334ef9a6a967467eeb4dbb7c41e70f793f5e1067' 
  AND token = 'ftnZOg22t0NEv1bwCFC8l/n7ne4+kbFgsItTz71Ib88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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