Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dcc22e279fa27e936a3f63761a14fbd710556a450b0e5c100f2d119f49d601d' 
  AND token = 'OqBWg26oxyTGfwSjKD/CDBne9P5Fg8z2GE4H2hVkwfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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