Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d553964b6a496568b566795e4353267951790d7669e441527148519be82be55' 
  AND token = '+rqdLL5aWI9IMAJ7jDhXm0vEUt439WlhxVEhn7L4tJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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