Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcc94460be610f1f844aa6b3942a99032ed96d0cb5ade229bf94d223375d83f7' 
  AND token = 'EEs52G9Ll4/MttcNvr/7BJvgx8Quyb6aAc4ken48rpU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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