SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05a549def1dedf1bd753c3f72a2eae5f41a7a6b991f5284ed585fcb8fe731f15' 
  AND token = 'YFYc+ZR97jZqfO36YFsKhld2jY6ipMSNggyGB/zEO1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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