Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '287a3369e139f1b57c247b70fd5a0d5f658cc42430815ac76dac8041e32c938c' 
  AND token = 'RqIgj5EMhF3riO4+txjhIdIqIBLEDaaxq73HqKCIvyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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