Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eac6d60746ec1d37bde6070c9616ad0c3bdef045afe0330989df50b7ffc1adb7' 
  AND token = '+7fDWgagWrCrgKKV8rC55YWzo/HDJNBUkBJlEGSrtiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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