Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0946d3271c0577e698c505e30f80635e9646a942eac05d177f66a8dd925b9d6a' 
  AND token = 'doE5fY1hcpQW4i43aLjeHTqTWHpXHevFQi5bWkFhjQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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