Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a32385b99166a352d4831fbbd014f6fafc237c36746961aa4fdd51fdb4b0fe3' 
  AND token = 'vPdqCcnYHkwEPv5+u8siCdu98wUcPq1N/k0tcSJsXpk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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