Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d4c86cf2bf37f94e14720342e3c875ea81b7509b1083d4af808bb0cf53e46a7' 
  AND token = 'dAQiBP0nVox4brBcSFSlgqY5gFBicg8tlQ0n13XOy1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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