Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '78301a636d9fd9003903acf23417129745776c2acce1d3c30703da8842d31f39' 
  AND token = 'DO5I69t3kWlyCV5UtSbEeqrSnFiJ5+OsddH557bsoMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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