Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7c1d60a93a04be7aae5adc7a2a2dc0bf2fa78eab90430ae8ac9b419f286badb' 
  AND token = '9nLTcFW+TIWhbCKcUXR9h7BlRgqSLaewYSpVNuHVFQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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