Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41d97cb70debd616ea18e5b7cdfcf21b67be92f799444b6352f63aceac0198dd' 
  AND token = 'y2Yubr+j65/8gUbbLIUw0Rr1FCBxHDy3tHLWAglyLzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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