Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '927298dd701fa02d681cbac0c498a667a326c712923e2ec591f28b7fc04c4f94' 
  AND token = 'Noo33tsQ91bfzcmChJ9gv2Mwr5IeB5P/yGOk5nwQST4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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