Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f13dc0a87141414cf03a6909c09f38079c631fa7ee1c8901cc7219b0471a7e01' 
  AND token = '9pVjXOE+eAzUwwmp678xOJ5Ww2/j5JakRvAFarDy6Rk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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