Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3be1d633c6a3df64718544b6486bba8978db4db3c1be70db329fafda3b463683' 
  AND token = 'KuPcOH9XtuIQMf+M9TzTi9/h8JLaeuTkY1HomkeJMDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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