Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e955dd79600d20529c7849dafa6207056b774716ff76814c78b839b462369e5' 
  AND token = 'uvG+irI6GBl1Qqwud4sI4D8vTnGz64Z4cE10jbCay2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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