Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11a16d93a3a35b42692e735acbe5debe3cd9ab34ec26d5fbde3ccaf422fe6dca' 
  AND token = 'mUVAMfNtcj8D72yeC4NTX7YAjodJGx9NlouulToIE14=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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