Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb7ee17e196ddbef0568f4a69861f27336d2cc43598805503512c8c8f0ae308f' 
  AND token = 'qXpBIbkOnZiU9VGr0McIbbw1CeYdL8ALGrHmV0J98iQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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