Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1691345bd36a4414cd7cf93ad06da96fffc64feeae081771667009eaf50a293e' 
  AND token = 'QrJgE3mNmy5qwz+1FXprpWqQErjo/3Wa8R7Ny8hcBOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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