Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3edce7076100d36e4116878b5fb45780835e63a05401a6cb323866a6a0ac7c4d' 
  AND token = 'vT6rywVa2pM6g0TuF5uztfiQG36VTN8CXIdYOwhl7VE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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