Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c22b74bc67daa50696af4837ae2a97290510b0c1d58968a7245a3855ca2f6dfd' 
  AND token = 'DV8aH6I7NFMUyMKRxgh4RtpEoU0uFc15+llWrCpG+SI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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