Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61033eb40e1884d85d94d2d759b282a5d0d9de57062103d86a25b458b154e3cf' 
  AND token = 'jiALa5V85tEbCcsaHFJKfUV2ym7z/m12A2nwGO4iV+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}