Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0cfb8220f291611c96c929ad0aa00896e098c6872794eef40293471530ab9bdb' 
  AND token = 'YhOH8IHiyElm8N8QLygda73+X+wop8suTRlrstoAOa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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