Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd648c823b6a2e038f9435db78ea3bee2d71481e43ab92b29ac609c37d3682a4a' 
  AND token = 'go/9sK48HPe2svctzEfyaTgT+luAnkhpNzgi10O7apk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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