Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9654e793522f86284828011aa4b0d5da32593f99dd36a80b5009399848544f89' 
  AND token = '/K0AMCQqsNXcZpGNupJmrKRannb8J6YaPqNRFR0VPPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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