Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '856f16f5a19b20bd11b1d85dc5d906795d3ed110ca8ebeeb2f6eedd07cbbd394' 
  AND token = '4RP83k2Go5GxRiLGFK2WxrclRERS9/RzWI0aGxYEg8c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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