Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c49935f8b28511aa19e4567c717ae2a732f7334c9fe287c1b7d9ddee380961f' 
  AND token = 'Z85d7mZ10g8xlARx+QJvjQ258W4vsjS83PsDWsr2x7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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