Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5aed73b2090aef53a049b0365ab37939c813ce64f22c5eae20ee208861ed32a4' 
  AND token = 'Cwa8Sx0MWdD/+GpVB3Oy4ruO07V4SXC8V/mdIw4d6iw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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