Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3195af88500a0c9334bd431e8e6156a3a892e7f240b42e729a706519be6d0ae6' 
  AND token = 'g6Q/xSUUFKnq2ChUnOxdG2dxmiLabsGjIjAvH2ACV/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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