Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d52175170cc23bc9c84dcbd8e61823e260b36d683655451c3ab98b0ae9b30cc' 
  AND token = 'CQje77eXzd6hdHaHbXEeaK6yeaHFpV5QqJ23kCv/wxM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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