Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f152b082c434ac5798a9eb940fc5f27e620fac4528d3b2ef8981f139ab0238a' 
  AND token = 'efP1PobLOMbfIa1kAWxxuJpMWf2qrtfUtRfw4vl9UNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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