Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d0fd03661a048c76e2ce53119814bf012d9c174c7cb49a8a397d0c207257060' 
  AND token = 'CFGImDuNNpEP7iqp8mGavdbwOr29XrIytxrCHzmG7nM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}