Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '928e8414eb8a8428596cd7e70fca1c9e33ec04085e218a97b5b15de0864721c7' 
  AND token = 'XLU6FC2WFzie78cZFmsjmSortlkwF5GNdF8LR6fDlf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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